<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>

<body>
    <a href="index.html">点击我去往首页</a>
    <button onclick="ht()">后退</button>

</body>

</html>
<script>
    function ht() {
        // 后退1个页面
        history.go(-1)
    }
</script>